vfs: remove DCACHE_NEED_LOOKUP

The code that relied on that flag was ripped out of btrfs quite some
time ago, and never added back. Josef indicated that he was going to
take a different approach to the problem in btrfs, and that we
could just eliminate this flag.

Cc: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 10 deletions

diff --git a/fs/namei.c b/fs/namei.c
index 35195ff9d194..25a41e02984b 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1275,9 +1275,7 @@ static struct dentry *lookup_dcache(struct qstr *name, struct dentry *dir,
         *need_lookup = false;
         dentry = d_lookup(dir, name);
         if (dentry) {
-                if (d_need_lookup(dentry)) {
-                        *need_lookup = true;
-                } else if (dentry->d_flags & DCACHE_OP_REVALIDATE) {
+                if (dentry->d_flags & DCACHE_OP_REVALIDATE) {
                         error = d_revalidate(dentry, flags);
                         if (unlikely(error <= 0)) {
                                 if (error < 0) {
@@ -1383,8 +1381,6 @@ static int lookup_fast(struct nameidata *nd, struct qstr *name,
                         return -ECHILD;
                 nd->seq = seq;
 
-                if (unlikely(d_need_lookup(dentry)))
-                        goto unlazy;
                 if (unlikely(dentry->d_flags & DCACHE_OP_REVALIDATE)) {
                         status = d_revalidate(dentry, nd->flags);
                         if (unlikely(status <= 0)) {
@@ -1410,11 +1406,6 @@ unlazy:
         if (unlikely(!dentry))
                 goto need_lookup;
 
-        if (unlikely(d_need_lookup(dentry))) {
-                dput(dentry);
-                goto need_lookup;
-        }
-
         if (unlikely(dentry->d_flags & DCACHE_OP_REVALIDATE) && need_reval)
                 status = d_revalidate(dentry, nd->flags);
         if (unlikely(status <= 0)) {